<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>作业</title>
    <style>
        .box{
            border:1px solid blue;
            width: 400px;
            margin: 0 auto;
            padding: 50px 0;
        }
        .jgb{
            /* border:1px solid black; */
            width: 20px;
            margin:0 auto;
        }
        .s1,.s2{
            width: 20px;      
        }
        .s1{
            background-color: rgb(168, 93, 93);
            height: 100px;
            background-image: linear-gradient(to right,#F5E65E,#f7e3ae 30%,#C5BB0D);
        }
        .s2{
            background-color: rgb(73, 143, 170);
            height: 200px;
            background-image: linear-gradient(to right,#EA5656, #F9D6D6 30%,#EA5656);
        }
        .paper1{
            width: 500px;
            height: 800px;
            border:1px solid black;
            background:repeating-linear-gradient(to bottom,#F4F4F4,#F4F4F4 5%,rgb(92, 86, 86) 5%,gray 6%);
        }
        .paper2{
            width: 500px;
            height: 800px;
            border:1px solid black;
            background:repeating-linear-gradient(to bottom,#F4F4F4,#F4F4F4 5%,rgb(92, 86, 86) 5%,gray 10%);
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="jgb">
            <div class="s1"></div>
            <div class="s2"></div>
            <div class="s1"></div>
        </div>

    </div>
    <div class="paper1">

    </div>
    <hr>
    <div class="paper2">

        </div>
</body>
</html>